Toothbrush Head

ABSTRACT

A toothbrush head comprises a head base and a head frame framing the head base. The head base comprises a substrate with multiple sockets for inserting bristles. The substrate has an outer frame, a central component, and two lateral components. The outer frame comprises a space, a front inner wall, a back inner wall, and two lateral inner walls. The central component is positioned in the space of the outer frame and links to the front inner wall and the back inner wall thereof. Each of the two lateral components is positioned between the central component and each of the two lateral inner walls and links to each of the two lateral inner walls with junctions, respectively, allowing the two lateral components to be rotatable. The toothbrush head helps users to brush the teeth with Bass method without injuring the gingiva, and keeps the toothbrush clean after brushing the teeth.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a toothbrush head, especially to atoothbrush head comprising a head base capable of rotating and a headframe with a soft material, allowing users to clean their teeth at a45-degree angle with slight pressure on the gingival margin and protectthe teeth and gingival from injury.

2. Description of the Prior Art

One of the reasons causing periodontal disease is cleaning the teeth ina wrong way. The most effective and correct method for cleaning teeth isBass method by touching the bristles to the teeth at a 45-degree angle,and brushing the upper teeth with up-down processing and brushing thelower teeth with bottom-top processing from facial surfaces, occlusalsurfaces to lingual/palatal surfaces of the teeth. Each part of theteeth needs to be brushed 10 to 20 times and total brushing time is atleast two minutes.

A first conventional toothbrush head comprises a fixed head baseanchored with bristles. However, users cannot brush the teeth at a45-degree angle correctly with the first conventional toothbrush head.

A second conventional toothbrush head comprises a head base with afulcrum set at a center thereof, allowing a flat of the head base to beshaken horizontally at any angle during tooth-brushing. However, usersstill cannot brush the teeth at a 45-degree angle correctly with thesecond conventional toothbrush head. Additionally, the head base isusually made of rigid material which easily causes gingival injury asthe head base touches the gingiva during tooth-brushing. Moreover, solidstructure of the first and second conventional toothbrush heads easilycauses water to accumulate on the head base and bacteria to grow ifusers do not dry the toothbrush heads thoroughly.

To overcome the shortcomings, the present invention provides atoothbrush head to mitigate or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the invention is to provide a toothbrush head forhelping users to brush the teeth with Bass method without injuring thegingiva, and keeping the toothbrush head dry after brushing the teeth.

The toothbrush head in accordance with the present invention has a headbase and a head frame framing the head base. The head base comprises asubstrate. The substrate comprises an outer frame, a central component,two lateral components, at least one junction and multiple sockets. Theouter frame comprises a receiving space. The receiving space has a frontinner wall, a back inner wall and two lateral inner walls. The centralcomponent is positioned in the receiving space of the outer frame. Theat least one junction links the central component to the front innerwall or to the back inner wall of the receiving space. One of the twolateral components is linked to one of the two lateral inner walls ofthe outer frame with the at least one junction and the other one of thetwo lateral components is linked to the other one of the two lateralinner walls of the outer frame with the at least one junction. Themultiple sockets are formed on the central component and the two lateralcomponents. The interspace is formed between the central component andeach of the two lateral components, the front inner wall and the backinner wall of the outer frame; between one of the two lateral componentsand one of the two lateral inner walls of the outer frame; as well asbetween the other one of the two lateral components and the other one ofthe two lateral inner walls of the outer frame. Two junctions are formedbetween one of the two lateral components and one of the two lateralinner walls of the outer frame; two junctions are also formed betweenthe other one of the two lateral components and the other one of the twolateral inner walls of the outer frame, allowing each of the two lateralcomponents to be rotated by a single side fixation.

Bristles are inserted into the multiple sockets. The bristles insertedinto the multiple sockets of the two lateral components of the substratecan be rotated at a 45-degree angle to brush the teeth and decreasebrushing pressure for protecting teeth and gingival. The bristlesinserted into the sockets of the central component of the substrate canbe brushed vertically on the surface of the teeth for enhancing thecleaning effect.

The head base and the head frame are made of different materials. Thehead base is made of a rigid material, and the head frame is made of asoft material. The frame is formed inside and at a bottom rim of thehead base by overmolding technique or 3D printing technique, allowingthe toothbrush head to be comprised of two different materials. Thetoothbrush head prevents injury of the gingival caused by touching thetoothbrush head to the gingival during tooth brushing. The substrate ofthe head base can be used as a tongue scraper.

The interspace is formed between the central component and each of thetwo lateral components. The interspace allows users to dry thetoothbrush head thoroughly after brushing the teeth; besides, dirtblocked by the bristles of the head base is easily to be flushed awaythrough the interspace. Moreover, the interspace allows water to beeasily evaporated and prevents water from accumulating on the head base,thereby further preventing bacteria growing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a perspective view of a head base of a toothbrush head inaccordance with the present invention;

FIG. 1B is a perspective view of a head frame of the toothbrush head inaccordance with the present invention;

FIG. 2 is a perspective view of the toothbrush head in accordance withthe present invention;

FIG. 3 is a side-sectional and end view of the toothbrush head in ausage state in FIG. 2;

FIG. 4 is an another side-sectional and end view of the toothbrush headin a usage state in FIG. 2;

FIG. 5 is a top view of the head base in FIG. 1A; and

FIG. 6 is a perspective back view of the head base in FIG. 1A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With references to FIGS. 1A, 1B and FIG. 2, a toothbrush head inaccordance with the present invention comprises a head base 10 and ahead frame 20 framing the head base 10. The head base 10 comprises asubstrate. With reference to FIGS. 1A and 6, the substrate of the headbase 10 comprises an outer frame 101, a central component 10B, twolateral components, at least one junction and multiple sockets 10A. Thetwo lateral components comprise a first lateral component 10C and asecond lateral component 10D. The at least one junction comprises afront junction 10E, a back junction 10F, a first junction 10G, a secondjunction 10H, a third junction 10I and a fourth junction 10J. Themultiple sockets 10A are inserted by bristles 30.

The outer frame 101 comprises a receiving space, a front inner wall, aback inner wall and two lateral inner walls. The central component 10Bof the head base 10 is positioned in the receiving space of the outerframe 101. The first lateral component 10C is linked to one of the twolateral inner walls of the outer frame 101 with the first junction 10Gand the second junction 10H of the head base 10. The second lateralcomponent 10D is linked to the other one of the two lateral inner wallsof the outer frame 101. The first lateral component 10C and the secondlateral component 10D are respectively linked to each of the two lateralinner walls of the outer frame 101 and is respectively positionedbetween the central component 10B and each of the two lateral innerwalls to which the first lateral component 10C and the second lateralcomponent 10D are linked, allowing the first lateral component 10C andthe second lateral component 10D to be rotated by a single sidefixation.

With references to FIG. 1A and FIG. 3, the first lateral component 10Cis linked to one of the two lateral inner walls of the head base 10 witha single-side linkage by the first junction 10G and the second junction10H, allowing the first lateral component 10C to be rotatable. It allowsthe bristles 30 inserted in the multiple sockets 10A of the firstlateral component 10C to be rotated at 45 degrees for cleaning duringtooth brushing. With references to FIGS. 1A and 4, the second lateralcomponent 10D is linked to the other one of the two lateral inner wallsof the head base 10 with a single-side linkage by the third junction 10Iand the fourth junction 10J. It allows the bristles 30 inserted in themultiple sockets 10A of the second lateral component 10D to be rotatableat 45 degrees for cleaning during tooth brushing. The present inventionprovides a toothbrush head with multiple orientations by the head base10 with multiple bristles 30 and the head frame 101 framing the headbase 10. The present invention helps users to brush teeth by Bass methodand allows the bristles 30 to be bent at 45 degrees as touching andpressing the bristles 30 from the teeth to the crevices between theteeth. It allows the bristles 30 to clean the teeth and the crevicesbetween the teeth thoroughly for decreasing the risk of causing decayedtooth and periodontal disease. With reference to FIG. 5, the amount ofthe central component 10B is at least one, and an interspace 40 isformed between the central component 10B and each of the two lateralcomponents, the front inner wall and the back inner wall of the outerframe 101, between one of the two lateral components and one of the twolateral inner walls of the outer frame 101, as well as between the otherone of the two lateral components and the other one of the two lateralinner walls of the outer frame 101. The interspace 40 allows users todry the toothbrush head 10 thoroughly after brushing the teeth; besides,the dirt blocked by the bristles 30 of the head base 10 is easily to beflushed away through the interspace 40. Moreover, the interspace 40allows water to be easily evaporated and prevents water fromaccumulating on the head base, thereby further preventing bacteriagrowing.

In another embodiment of the present invention, the amount of junctionsformed on the first lateral component 10C and the second lateralcomponent 10D of the head base 10 is at least two. The junctions of thepresent invention help to control the rotating orientation of the firstlateral component 10C and the second lateral component 10D of the headbase 10, allowing the first lateral component 10C and the second lateralcomponent 10D of the head base 10 to be rotated in a single orientation.It also allows the bristles 30 inserted in the first lateral component10C and the second lateral component 10D of the head base 10 to berotated and bent at 45 degrees to thoroughly clean the teeth andcrevices between the teeth for decreasing the risk of causing decayedtooth and periodontal disease.

With references to FIGS. 1A, 1B and 5, the head base 10 and the headframe 30 are made by the overmolding technique or 3D printing technique.The head base 10 is made first and the head frame 20 is formed insideand at a bottom rim 11 of the head base 10. A first protrusion 20A, asecond protrusion 20B, a third protrusion 20C, a fourth protrusion 20D,a fifth protrusion 20E and a sixth protrusion 20F of the head frame 20are respectively mounted into the front junction 10E, the third junction10I, the fourth junction 10J, the second junction 10H and the firstjunction 10G of the head base 10 to form a toothbrush head with twodifferent materials. The head base 10 is made of a rigid material, suchas plastic. The head frame 20 is made of a soft material, such assilicon.

The rigid plastic material of the surface opposite to the bristles 30inserted in the head base 10 can be used as a tongue scraper duringtooth brushing. The soft material of the head frame 20 can protect thegingival from injury during tooth brushing as the head frame 20 touchesthe gingival.

Even though numerous characteristics and advantages of the presentinvention have been set forth in the foregoing description, togetherwith details of the structure and features of the invention, thedisclosure is illustrative only. Changes may be made in the details,especially in matters of shape, size, and arrangement of parts withinthe principles of the invention to the full extent indicated by thebroad general meaning of the terms in which the appended claims areexpressed.

What is claimed is:
 1. A toothbrush head comprising: a head basecomprising: a substrate comprising: an outer frame comprising: areceiving space comprising: a front inner wall, a back inner wallopposite to the front inner wall, and two lateral inner walls positionedbetween the front inner wall and the back inner wall; a centralcomponent positioned in the receiving space of the outer frame andcomprising: at least one junction linking the central component to thefront inner wall or to the back inner wall; and two lateral componentswherein one of the two lateral components is linked to one of the twolateral inner walls with the at least one junction, the other one of thetwo lateral components is linked to the other one of the two lateralinner walls with the at least one junction; and each of the two lateralcomponents is respectively positioned between the central component andthe lateral inner walls to which the lateral component is linked; andmultiple sockets formed on the central component and the two lateralcomponents; and a head frame framing the head base.
 2. The toothbrushhead as claimed in claim 1, wherein interspaces are formed between thecentral component and each of the two lateral components, the frontinner wall and the back inner wall of the outer frame, as well asbetween one of the two lateral components and one of the two lateralinner walls of the outer frame, as well as between the other one of thetwo lateral components and the other one of the two lateral inner wallsof the outer frame respectively.
 3. The toothbrush head as claimed inclaim 1, wherein one of the two lateral components is linked to one ofthe two lateral inner walls of the outer frame with two junctions, andthe other one of the two lateral components is linked to the other oneof the two lateral inner walls of the outer frame with two junctions. 4.The toothbrush head as claimed in claim 2, wherein one of the twolateral components is linked to one of the two lateral inner walls ofthe outer frame with two junctions, and the other one of the two lateralcomponents is linked to the other one of the two lateral inner walls ofthe outer frame with two junctions.
 5. The toothbrush head as claimed inclaim 1, wherein the head frame is formed inside and at a bottom rim ofthe head base.
 6. The toothbrush head as claimed in claim 2, wherein thehead frame is formed inside and at a bottom rim of the head base.
 7. Thetoothbrush head as claimed in claim 3, wherein the head frame is formedinside and at a bottom rim of the head base.
 8. The toothbrush head asclaimed in claim 4, wherein the head frame is formed inside and at abottom rim of the head base.
 9. The toothbrush head as claimed in claim5, wherein the head base is made of a rigid material.
 10. The toothbrushhead as claimed in claim 5, wherein the head frame is made of a softmaterial.